feat: Add B2 backup configuration to CNP Cluster

infrastructure/addons/cnpg/postgres-cluster.yaml

@@ -40,4 +40,21 @@ spec:
     tolerations:
       - key: node-role.kubernetes.io/control-plane
         operator: Exists
-        effect: NoSchedule
+        effect: NoSchedule
+
+  backup:
+    barmanObjectStore:
+      destinationPath: "s3://s3.us-east-005.backblazeb2.com/HetznerTerra/rancher-backups/"
+      endpointURL: "https://s3.us-east-005.backblazeb2.com"
+      s3Credentials:
+        accessKeyId:
+          name: b2-credentials
+          key: B2_ACCOUNT_ID
+        secretAccessKey:
+          name: b2-credentials
+          key: B2_APPLICATION_KEY
+      wal:
+        compression: lzop
+      data:
+        compression: lzop
+      encryption: AES256